70 centimeters is a common amateur radio (ham) band in the UHF spectrum. The exact amateur frequency allocations varies regionally. In the US and Australia the band ranges from 420 to 450 MHz with some geographical limitations; in Canada, the band is only 430 - 450 MHz; in the UK, amateurs are allocated 430 - 440 MHz.

This band is popular with amateurs engaged in emergency communications where portable and mobile radios are frequently used. Often, hams have dual-band radios, capable of operation on both 70 centimeters and 2 meters.

Band Plan

---

Below is the ARRL US band plan for the 70 cm band:

420.00 - 426.00 MHz	Amateur TV repeater or simplex, and experimental
426.00 - 432.00 MHz	Amateur TV simplex
432.00 - 432.07 MHz	CW EME (Moonbounce)
432.07 - 432.10 MHz	Weak-signal CW
432.10 MHz	70-cm calling frequency
432.10-432.30	Mixed-mode and weak-signal
432.30 - 432.40 MHz	Propagation beacons
432.40 - 433.00 MHz	Mixed-mode and weak-signal
433.00 - 435.00 MHz	Auxiliary/repeater links
435.00 - 438.00 MHz	Satellite only (internationally)
438.00 - 444.00 MHz	ATV repeater input and repeater links
442.00 - 445.00 MHz	Repeater inputs and outputs (local option)
445.00 - 447.00 MHz	Shared by auxiliary and control links, repeaters and simplex (local option)
446.00 MHz	National simplex frequency
447.00 - 450.00 MHz	Repeater inputs and outputs (local option)

---

Amateur radio bands

Banda de 70cm